If that were still true I don't think virtualization would have caught on to the extent that it has. I work in a pretty conservative business that used to run e

If that were still true I don't think virtualization would have caught on to the extent that it has. I work in a pretty conservative business that used to run everything on IBM and then HP mainframes but has since migrated to commodity x86 hardware running VMWare. Downtimes do happen but modern monitoring and deployment processes can address them quickly and cheaply.